Perhaps you should try some spelling variations:
171820 early » 1720 early, 1780 early, 1710 early
2f commerce » 2 commerce, b2b commerce, c2c commerce
f commerce » _ commerce, a commerce, c commerce
2f early » 20 early, 21 early, ef early

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %great britain %((2f commerce) OR (f commerce)) %((2f early) OR (((1820 early) OR (171820 early)))) works to 1800%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%great britain %((2f commerce) OR (f commerce)) %((2f early) or (((1820 early) or (171820 early)))) works to 1800%22".
• Adding a wildcard symbol may retrieve word variants: %great britain %((2f commerce) OR (f commerce)) %((2f early) or (((1820 early) or (171820 early)))) works to 1800%22*.